Tipping lock for a garbage chute

ABSTRACT

Tipping lock for a garbage chute comprising a container which is forwardly and rearwardly tiltable about a shaft and a seal with a locking device so designed that it keeps the container locked in its dumping position in all the open positions of the seal and only allows opening of the seal in the dumping position of the container.

United States Patent Van De Pol 1451 Apr. 25, 1972 [s41 TIPPING LOCK FOR A GARBAGE 2,869,780 1/1959 Jensen ..232/44 CHUTE 3,145,918 8/1964 I-Iiggens et a1 ....232/44 X 3 054,555 9/1962 Saxon. ..232/43.4 [72] Inventor: Eugene J. M. Van De Pol, The Hague,

Netherlands FOREIGN PATENTS OR APPLICATIONS [73] Assignee: N.V. Ontwerp-en Exploitatiebureau 601,280 7/1960 Canada ..232/44 Shunt, The Hague, Netherlands 1,313,694 2/1962 France [22] Filed: Sept. 23,1969

Primary Examiner-Paul R. Gilliam PP 360,225 Auomey-Cushman,Darby&Cushman [30] Foreign Application Priority Data [57] ABSTRACT Sept. 24, 1968 Netherlands ..6813625 TiPPing garbage chute mpmmg a which is forwardly and rearwardly tiltable about a shaft and a 52 us. Cl. ..232/44 Seal with a lcking device designed keeps [51] Int. CL... 3 5 11/04 tainer locked in its dumping position in all the open positions 53 Field of Search ..232/43.1, 44, 47 of the Seal and Only allows Opening of the Seal in the dumping position of the container. 56 R i F 1 erences Cited 2 Claims, 9 Drawing Figures UNITED STATES PATENTS 1,322,522 11/1919 Bixon ..232/47 PATENTEDAPR 2 5 I972 SHEET 3 OF 6 I'NVENTOR. zuas/vs J. 1 4 05 i 04 ORA/f 1 5 /WAZL,M% 44W PATENTEDAPR 25 m2 sum 14 8F 6 L y L H m 5 N 0 0 m PATENTEDAPR 25 I972 SHEET 5 SF 6 "INVENTOR. EUGf/VL' J M? 26' P04 Q6 QZJLW TIPPING LOCK FOR A GARBAGE CIIUTE The invention relates to a tipping lock for a garbage chute comprising a container which is rearwardly and forwardly tiltable between a dumping and a filling position and which is provided on the one hand with a filling opening closed in the dumping position and on the other hand with a discharge end with a seal and a locking device which keeps said seal locked to the container discharge end in the filling position of said container.

Such a type of tipping lock is being frequently used in tall buildings in which a plurality of superposed flats have a common chute for the discharge of household refuse, the tipping lock providing the possibility for users at the various floor levels to throw refuse into the garbage chute without bad odours entering the flat, while it is prevented that too large pieces are thrown into said chute, which might result in clogging.

Such a tipping lock is for example known from Dutch Pat. No. 86,288. In this prior device the locking of the seal to the container is effected during the first part of the movement of the container caused by the operation of the seal from the dumping position to the filling position. By moving such a container not by means of the seal but otherwisesefor instance by means of a hook or a piece of rope before the locking between the seal and the chute has been effected, the tipping lock may be opened without the container being closed at its lower end. In this way too large objects may be thrown into the garbage chute.

The object of the invention is to provide a tipping lock of the kind defined above, but one that is of simple construction and cannot be tampered with.

To this end, in such a tipping lock, said locking device should be designed such that it also keeps the container locked in its dumping position in all the open positions of the seal and only allows opening of the seal in the dumping position of the container.

In this way it can be achieved that at all times either the container is locked in its dumping position or the seal is locked to the container discharge end, so that it is prevented with certainty in all conditions that unduly large objects are thrown into the garbage chute.

Some embodiments of the invention will be described in greater detail, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 shows diagrammatically, partly in side elevational view, a tipping lock having a lock in accordance with the invention;

FIG. 2 shows a front elevational view of a part of the container shown in FIG. 1;

3, 4 and 5 show the locking device for the tipping lock and the seal thereof in nearly closed position and in fully closed position of the seal and in the filling position of the container;

FIGS. 6, 7 and 8 show a variant of the embodiment of the locking device in the positions corresponding with FIGS. 1, 4 and 5, and

FIG. 9 shows another preferred embodiment.

In FIG. 1, a container 2 is hinged to a frame or frame plate 1 on a shaft 3. A seal 4 movable about the same shaft can be operated by a cover 5 which is integral with said seal. A swivel means 7 is mounted for hinging movement about a shaft 8 in a depression 6 located on the outside in a side wall of the container The frame 1 has a stop 10 cooperating with the swivel means 7 and extending to a recess 9 in the depression 6. Furthermore a cam profile 11, a detent 12, and also an inclined guide surface 13, all attached to the seal 4, cooperate with this swivel means. The container and the cover 5 abut in known manner against the frame 1 as shown in 14.

In the position shown in FIG. .1 the container is closed at its upper end, while the seal 4 is open, as a result of which the discharge opening of the container communicates in known manner with a garbage chute not shown. In the filling position,

' only partly shown in FIG. 5, the top of the container is almost entirely outside the frame 1 so that household refuse can be thrown into the container, while the bottom of the container is sealed by the seal 4. In the. dumping position as shown in FIG. 1, the cover 5 can be moved freely with the seal connected thereto, but the container itself is locked by means of the swivel means 7 and stop 10 in a manner which will be explained below in greater detail, In the position shown in FIG. 3 the seal 4 is almost entirely closed, the swivel means 7 attached to the container already engaging with a detent mounted on the seal, while the container is still locked with respect to the frame. In the position shown in FIG. 4 the seal 4 is entirely closed, while the blocking of swivel means 7 with respect to stop 10 has just been removed, while in FIG. 5 the fully opened position is shown, wherein cover 5, seal 4 and container 2 are tilted forwardly as a whole from the position shown in FIG. 4.

In order that the nature of the locking device may be better described the front edge of stop 10 is designated by 15 and a sliding surface thereof, being concentric with shaft 3, by 16. The part of the swivel means 7 cooperating with stop 10 comprises the abutting plane 17, which is concentric with shaft 8, and a circular sliding surface 18 the radius of curvature of which corresponds substantially with that of sliding surface 16. The swivel means 7 further comprises the circular portions 19, 20 and 21, as well as a connecting piece between the arcs 20 and 21 designated by 22. Corresponding parts of the cam profile 11 are designated by 23, 24 and 25. The part of the swivel means 7 acting as a hook comprises a front face 26, a hook plane 27 and a rear face 28. The front face 26 is adapted to co-act with a front face 29 of detent 12 and the hook face 27 with a hook face 30 of detent 12, while the rear face 28 will co-act with inclined guide surface 13.

In the position shown in FIG. 1 the abutting face 17 of swivel means 7 extends beyond the stop shoulder 15 of stop 10. The swivel means 7 consequently cannot rotate in the direction of arrow 31 and neither in the direction of arrow 32 because the latter is prevented by the cooperating faces 20, 21 and 22 of the swivel means and 23, 24 and 25 of the cam profile 11. It is observed that faces 23 and 20 could suffice, which faces would then prevent rotation of the swivel means 7 in the direction of arrow 31, but in which case a fixed stop would be necessary for the face 18 of swivel means 7 in the depression 6 to prevent rotation in the direction of arrow 32.

In the position drawn in FIG. 1 the seal 4 can be moved freely by means of cover 5 in the direction of arrows 33. As will be clear, the cover 5 is not essential for the movement of the seal, but the seal 4 may also be moved by means of a lever and for example a foot pedal. However, it is often preferable to use a cover 5, as in the this way a double sealing of the garbage chute is ensured (14). In the drawing (FIG. 2) the stop 10 extends to a recess 9 of the depression 6. This is not strictly necessary, provided another stop is present adjacent the face 34 (FIG. 1) in the fully opened position of the container.

Rotation of the seal in the direction of arrow 33 does not alter the blocking of swivel means 7, until face 20 is released from face 23 of cam profile 11. At that moment the swivel means will start rotating by gravity. However, to be independent of the gravity and to effect a positive movement of the swivel means 7, the inclined guide surface 13 will touch the rear face 28 and start rotating swivel means 7 upon further movement of the seal. In this connection excess rotation will for the time being be prevented because the front face 26 of swivel means 7 slides along the face 29 of detent 12.'Upon still further rotation of seal 4 the position shown in FIG. 3 is reached. In that position the abutting face 17 still lies just behind the stop shoulder 15 of stop 10, but the hook face 27 of the swivel means 7 extends already some distance behind the hook face 30 of the detent 12 attached to closure cover 4. The swivel means 7 is hereby forcedly taken along between the inclined guide surface 13 and the hook face 30 of the detent 12. The container 12 is still blocked by means of stop 10 and abutting face 17, so while a fixed connection has already been effected between seal 4 and container 2, said container is still blocked by means of stop 10 and abutting face 17.

In the position shown in FIG. 4 the seal 4 is entirely closed, while the hook face 27 lies entirely behind the hook face 30 of the detent l2, and the inclined guide surface 13 bears against the rear face 28 of the hook of swivel means 7. Further rotation of swivel means 7 is therefore impossible. Moreover, also face 19 of the swivel means bears against the concentric face 24 of the cam profile 11. The front edge 17 is just free from the detent 10. The seal 4 can now solely be opened when the hook rotates back in the direction of the arrow 32. This is only possible in the position shown in FIG. 4. By slightly further rotating the cover 5 with container and seal 4 in the direction of arrow 33, the sliding surface 18 of the swivel means engages the sliding surface 16 of stop 10, so that any further rotation of said swivel means is impossible. This remains so until in the position shown in FIG. 5, in which the stop comes to rest against the abutting face 34.

The container cannot be opened further now, while upon re-closing the cover 5, opposite the direction of arrow 33, the seal 4 and container 2 move as a whole until the container has arrived again at the position shown in FIG. 4, while upon even further movement of cover 5 and seal 4 the container 2 is immediately locked by means of swivel means 7 and stop 10; it is only after this that the seal 4 can be opened.

As appears from a comparison of FIGS. 1, 3 and 4, the operation of the hook connection 27 and 30 and the blocking l7 and is such that it is impossible that the container can be opened before the swivel means engages detent 13, to prevent filling with longer pieces than corresponds with the depth of the container.

The construction of the locking device is such that in general no forces are exerted thereon. The pivot 8 only serves to enable the rotation of the swivel means. Upon opening of the container the forces are directly transferred from the cover 5 via the seal 4 to the container 2, while only upon closing a slight force can be transferred to the pivot 8, although in general the container 2 will be inclined to move back to the position shown in FIG. 1 by its own weight.

The operation of the locking device shown in FIGS. 6-8 in essence corresponds with that shown in FIGS. 1-5. Similar parts have therefore been designated by the same reference numerals. In this embodiment the side faces of the container may be entirely plane and even in entirely opened position of the container the locking device is located within the frame 1, as a result of which a simple sealing of the side faces with respect to the frame is possible.

The cam profile 11 only comprises the circular portion 23, while part of the function of said cam profile has been taken by the sliding surface 18, which is constructed as a slot in which the stop 10 can move.

The cover 4 only carries a detent or pin 12 which is adapted to slide along a circular face 35 and in a slot 36. This slot 36 is formed such that the detent 12 also serves as inclined guide surface 13 for rotating the swivel means 7.

If the seal 4 (FIG. 6) is not closed yet, the container 2 will I be locked in the frame by means of stop 10 and swivel means 7. The swivel means 7 is hereby prevented to rotate about shaft 8, on the one hand by the cam profile 11 (23) on the seal 4 and the circular portion of the swivel means 7 and on the other hand by the detent 12 on the seal 4 and the circular portion 35 of the swivel means 7.

If seal 4 is closed (FIG. 7) the swivel means 7 has been rotated so much by means of detent 12 and slot 36 (27) that the slot 18 has arrived at a position just opposite the stop 10. In this position there are only two possibilities of movement, namely firstly opening of the seal when the container is locked and secondly opening the container when the seal is locked.

If the container is open (FIG. 8) stop 10 engages slot 18 as a result of which further rotation of swivel means 7 is impossible and the seal 4 remains locked by detent 12 in slot 36. Further the pin 12 is constructed as a roll which is movable in a slot 37. Consequently, the circular faces 20 and 23 can be deleted from FIGS. 6-8.

Upon closing and opening of seal 4 the roll on pin 12 will impart a forced rotation to the swivel means, while the slot portion 36,27 effects the locking ofthe seal 4.

What is claimed is:

1. A transfer device for transferring matter from a room to a depository disposed beneath said device comprising side and rear walls and a shaft upon which said side walls are rotatably mounted for rotation between a dumping and a filling position and further comprising an access door rotatably mounted upon said shaft for closing the front of the space defined by said side and rear walls when said side walls are in a dumping position, and a discharge door fixedly attached to said access door and also rotatably mounted upon said shaft to move in unison with said access door for closing the bottom of the space defined by said side and rear walls when said side walls are in the filling position and a cam means rotatably mounted by a second shaft upon at least one of said side walls and cooperating with a first locking means fixed adjacent to said side wall and a second locking means fixedly attached to said discharged door for locking said discharge door against said side walls when said side walls are in the filling position and unlocking the discharge door when said side walls are in the dumping position.

2. A transfer device for a garbage chute comprising a container which is mounted in a frame to be installed in the garbage chute and is rearwardly and forwardly tiltable between a dumping and a filling position about a shaft fixed in the frame and mounted adjacent the bottom of the container, which container is provided in the upper side with a filling opening closed to the outside of the garbage chute by the frame in the dumping position and in the underside with a discharge opening closable by a closure, which closure is tiltable about the container shaft, a tipping locking device mounted on the container and adapted to keep the closure locked against the container discharge opening in the filling position of the container and allowing the opening of the closure in the dumping position of the container, which locking device comprises a swivel means rotatably mounted on a shaft fixed to the container, which shaft extends parallel to the container shaft, a fixed stop mounted to the frame and co-acting with the swivel means, said swivel means being adapted to engage a cam on the closure, in such a manner that a first edge portion of the swivel means, in the locked position of the closure forms an arc with the container shaft as its center and is adapted to pass the fixed stop upon movement of the container to the filling position which stop then prevents the rotation of the swivel means in at least one direction by abutting the first edge portion, while a second edge portion of the swivel means extends behind the fixed stop substantially normal to the first portion and forms an arc with the rotation shaft of the swivel means as its center in the locked dumping position of the container, the tipping locking device further comprising control means for the swivel means connected to the closure and cooperating with abutting faces on the swivel means which permit the unlocking and opening, and the closing and locking, respectively of the closure when the filling opening is closed, the arrangement being such that on the one hand, rotation of the swivel means is prevented in all open positions of the closure, while on the other hand, when the closure is closed the locking device is only unlockable after abutting faces on the swivel means have been hooked behind the control means of the closure to lock it to the container. 

1. A transfer device for transferring matter from a room to a depository disposed beneath said device comprising side and rear walls and a shaft upon which said side walls are rotatably mounted for rotation between a dumping and a filling position and further comprising an access door rotatably mounted upon said shaft for closing the front of the space defined by said side and rear walls when said side walls are in a dumping position, and a discharge door fixedly attached to said access door and also rotatably mounted upon said shaft to move in unison with said access door for closing the bottom of the space defined by said side and rear walls when said side walls are in the filling position and a cam means rotatably mounted by a second shaft upon at least one of said side walls and co-operating with a first locking means fixed adjacent to said side wall and a second locking means fixedly attached to said discharged door for locking said discharge door against said side walls when said side walls are in the filling position and unlocking the discharge door when said side walls are in the dumping position.
 2. A transfer device for a garbage chute comprising a container which is mounted in a frame to be installed in the garbage chute and is rearwardly and forwardly tiltable between a dumping and a filling position about a shaft fixed in the frame and mounted adjacent the bottom of the container, which container is provided in the upper side with a filling opening closed to the outside of the garbage chute by the frame in the dumping position and in the underside with a discharge opening closable by a closure, which closure is tiltable about the container shaft, a tipping locking device mounted on the container and adapted to keep the closure locked against the container discharge opening in the filling position of the container and allowing the opening of the closure in the dumping position of the container, which locking device comprises a swivel means rotatably mounted on a shaft fixed to the container, which shaft extends parallel to the containeR shaft, a fixed stop mounted to the frame and co-acting with the swivel means, said swivel means being adapted to engage a cam on the closure, in such a manner that a first edge portion of the swivel means, in the locked position of the closure forms an arc with the container shaft as its center and is adapted to pass the fixed stop upon movement of the container to the filling position which stop then prevents the rotation of the swivel means in at least one direction by abutting the first edge portion, while a second edge portion of the swivel means extends behind the fixed stop substantially normal to the first portion and forms an arc with the rotation shaft of the swivel means as its center in the locked dumping position of the container, the tipping locking device further comprising control means for the swivel means connected to the closure and cooperating with abutting faces on the swivel means which permit the unlocking and opening, and the closing and locking, respectively of the closure when the filling opening is closed, the arrangement being such that on the one hand, rotation of the swivel means is prevented in all open positions of the closure, while on the other hand, when the closure is closed the locking device is only unlockable after abutting faces on the swivel means have been hooked behind the control means of the closure to lock it to the container. 